. Cumacea (Sympoda). Cumacea. Cumacea: 10. Diastyloididae, 1. Diastyloides, 11. Diastylidae D. biplicatus, A. M. Norman in: Ann. nat. Hist., ser. 6 v. 13 p. 276 | 1897 D. biplicata, T. Scott in: Rep. Fish. Board Scotl., p. 134 | 1900 Diastyloides h., G. O. Sars, Crust. Norway, v. 3 p. 62 t. 46 | 1900 D. b., Zimnier in: Fauna arctica, v. I p. 426 (with synonymy) | 1905 D. b., Caiman in: Sci. Invest. Fish. Ireland, 1904 app. 1 p. 5^ 48 I 1909 D. b., A. M. Norman & U. S. Brady in: Nat. Hist. Tr. Northumb., ser. 2 p. 33. Pseudorostral lobes well pro- duced, slightly upturned, antero-
. Cumacea (Sympoda). Cumacea. Cumacea: 10. Diastyloididae, 1. Diastyloides, 11. Diastylidae D. biplicatus, A. M. Norman in: Ann. nat. Hist., ser. 6 v. 13 p. 276 | 1897 D. biplicata, T. Scott in: Rep. Fish. Board Scotl., p. 134 | 1900 Diastyloides h., G. O. Sars, Crust. Norway, v. 3 p. 62 t. 46 | 1900 D. b., Zimnier in: Fauna arctica, v. I p. 426 (with synonymy) | 1905 D. b., Caiman in: Sci. Invest. Fish. Ireland, 1904 app. 1 p. 5^ 48 I 1909 D. b., A. M. Norman & U. S. Brady in: Nat. Hist. Tr. Northumb., ser. 2 p. 33. Pseudorostral lobes well pro- duced, slightly upturned, antero- lateral corners obsolete. Carapace with 2 pairs of lateral oblique carinae, and hind margin also cari- nate, with an infero-lateral carina added in the d, only anterior half of lower margin serrate. Telson shorter than peduncle of uropods, with 6 pairs of lateral spines, geniculate in d at about one-third of its length. Peraeopod 1 elongate,, especially in regard to the 6^^^ joint, which is as long as the 2'^'^. Peraeo- pod 2 with both 2'i'i and 3^^ joints produced to a spiniform apex. Peduncle of uropods in the female little longer than the endopod. which exceeds the exopod by its 3*^ joint or more, spines on medial margin of its 3 joints respectively in Q 9, 2, 1, in d 20, 4, 2. Colour tinged with reddish brown. L. 9 7 mm. d about 8 mm. Norway, with ; Skagerrak and Kattegat; round Scotland; N. E. England,. 71—82 m; off W. of Ireland, depth 220—2980 Fig. 54. D. biplicatus (Sars), peraeopod 1. 11. Fam. Diastylidae 1856 Diastylidae, Bate in: Ann. nat. Hist., ser. 2 t).17 ] 1859 D., Danielssen in: Norske Selsk. Skr. 19. Aarh., j;.4ii p. 108 | 1863 D., A. M. Norman in: Tr. Tyneside- Club, V. 5iv p. 271 I 1864 D., Fr. Miiller, Fiir Darwin, p. 55 | 1878 & 1879 D. (restricted), G. 0. Sars in: Arch. Naturv. Kristian., v. 3 p. 466; «). 4 p. 44 | 1887 D., G. O. Sars in: Rep. Voy. Challenger, v. 19 pars 55 p. 7, 43 | 1893 D., T. Stebbing in: Int. sci. Ser.,
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